Back saw



FIG. 1 is a side elevational view of a back saw employing my new design, the stippling on the handle indicating a roughened surface texture for the grip portion;

FIG. 2 is a bottom view thereof;

FIG. 3 is a side elevational view of the side opposite that shown in FIG. 1;

FIG. 4 is a top view thereof;

FIG. 5 is the rear elevational view thereof; and

FIG. 6 is a front elevational view thereof. 

The ornamental design for a back saw, as shown. 